Wireless transport framework with uncoded transport tunneling
Granted: July 4, 2013
Application Number:
20130173998
Wireless transport of multiple service versions of a transport framework. First and second information may be processed for transmission, respectively, according to first and second service versions of a transport framework. The first and second information may be encoded using a first type of error correction coding; after processing, the processed first information may include error correction coding according to the first type of error correction coding, while the processed second…
MULTIPLE PHASE-LOCKED LOOPS FOR HIGH-POWER RF-POWER COMBINERS
Granted: July 4, 2013
Application Number:
20130170512
An RF power-supply for driving a carbon dioxide CO2 gas-discharge laser includes a plurality of power-oscillators phase-locked to a common reference oscillator. Outputs of the phase-locked power-oscillators are combined by a power combiner for delivery, via an impedance matching network, to discharge-electrodes of the laser. In one example the powers are analog power-oscillators. In another example, the power-oscillators are digital power-oscillators.
OPTICAL PUMPING OF A SOLID-STATE GAIN-MEDIUM USING A DIODE-LASER BAR STACK WITH INDIVIDUALLY ADDRESSABLE BARS
Granted: June 13, 2013
Application Number:
20130148679
A diode-laser bar stack includes a plurality of diode-laser bars having different temperature dependent peak-emission wavelengths. The stack is arranged such that the bars can be separately powered. This allows one or more of the bars to be “on” while others are “off”. A switching arrangement is described for selectively turning bars on or off, responsive to a signal representative of the temperature of the diode-laser bar stack, for providing a desired total emission spectrum.
BEAM-COMBINER FOR FIBER-DELIVERED LASER-BEAMS OF DIFFERENT WAVELENGTHS
Granted: May 23, 2013
Application Number:
20130128365
A beam combiner for combining laser-beams of different colors along a common path includes a directing-prism for each of the laser-beams and one combining-prism. The directing-prisms are arranged to transmit the laser-beams to the combining-prism. The directing-prisms and the combining-prism are configured and arranged with respect to each other such that the directing-prism transmits the beams along the common path.
METHODS AND APPARATUS RELATED TO A SIDE-FIRE MEMBER HAVING A DOPED SILICA COMPONENT
Granted: May 16, 2013
Application Number:
20130121640
In one embodiment, an apparatus may include an optical fiber that may have a surface non-normal to a longitudinal axis of a distal end portion of the optical fiber. The surface may define a portion of an interface configured to redirect electromagnetic radiation propagated from within the optical fiber and incident on the interface to a direction offset from the longitudinal axis. The apparatus may also include a doped silica cap that may be fused to the optical fiber such that the…
Parallel Execution of Trellis-Based Methods
Granted: May 16, 2013
Application Number:
20130121447
A receiver system and method for recovering information from a symbol data sequence Y. The symbol data sequence Y corresponds to a symbol data sequence X that is transmitted onto the channel by a transmitter. The symbol data sequence X is generated by the transmitter based on associated information bits. At the receiver, a set of two or more processors operate in parallel on two or more overlapping subsequences of the symbol data sequence Y, where each of the two or more overlapping…
Wireless Transport Framework with Variable Equalizer Training
Granted: April 11, 2013
Application Number:
20130089131
A system and method for wirelessly transmitting audiovisual information. Training information may be stored in a memory. A plurality of packets may be generated, including the training information. The plurality of packets may also include audiovisual information. The plurality of packets may include first information identifying a first training pattern of a plurality of possible training patterns. The first training pattern may specify one or more locations of the training information…
APPARATUS AND METHOD FOR BALANCING COMBINED RF POWER- SUPPLIES FOR DRIVING A CO2 GAS-DISCHARGE LASER
Granted: February 28, 2013
Application Number:
20130051416
Radio-frequency (RF) power supply apparatus for supplying RF power to discharge electrodes of a gas-discharge laser includes a plurality of amplifier modules each having an RF output. A power combining arrangement is provided for combining the amplifier module RF-outputs into a single combined RF-output connected to the discharge electrodes. A DC power supply is connectable to or disconnectable from each of the transistor amplifier modules, separately, to allow current drawn by any of…
CARRIER-ENVELOPE-PHASE STABILIZATION OF A MASTER OSCILLATOR OPTICAL AMPLIFIER SYSTEM
Granted: February 7, 2013
Application Number:
20130034114
A laser and amplifier combination delivers a sequence of optical pulses at a predetermined pulse-repetition frequency PRF. An interferometer generates a signal representative of the carrier-envelope phase (CEP) of the pulses at intervals corresponding to the PRF. The signal includes frequency components from DC to the PRF. The signal is divided into high and low frequency ranges. The high and low frequency ranges are sent to independent high frequency and low frequency control…
GAS PURIFIER FOR AN EXCIMER LASER
Granted: February 7, 2013
Application Number:
20130034118
An excimer laser includes a laser housing containing a lasing-gas mixture including a halogen. Contaminants including particulate matter and a metal halide vapor are generated in the lasing-gas mixture during operation of the laser. A gas-cleaning arrangement extracts lasing-gas mixture from the housing and passes the lasing-gas mixture through an electrode assembly. A repeatedly pulsed gas discharge is created in the electrode assembly by driving the electrode assembly with repeated…
HIGH-POWER CW FIBER-LASER
Granted: January 31, 2013
Application Number:
20130028276
A CW ytterbium-doped fiber-laser includes a gain-fiber having a reflector proximity-coupled to one end, with the other end left uncoated. A laser resonator is defined by the reflector and the uncoated end of the gain-fiber. Pump-radiation from fast-axis diode-laser bar-stacks emitting at 915 nm and 976 nm is combined and focused into the uncoated end of the gain-fiber for energizing the fiber. Laser radiation resulting from the energizing is delivered from the uncoated end of the…
Wireless Transmission of Multimedia Streams Which Uses Control Information to Associate Error Correction Coding With an Audiovisual Stream
Granted: January 31, 2013
Application Number:
20130031588
A system and method for wirelessly transmitting audiovisual information. A first plurality of packets including audiovisual information may be generated. A second plurality of packets including error correction coding information for the audiovisual information may be generated. Control information for associating the error correction coding information with the audiovisual information may be generated, and a third plurality of packets including the control information may also be…
MODE-LOCKED OPTICALLY PUMPED SEMICONDUCTOR LASER
Granted: January 3, 2013
Application Number:
20130003761
A laser includes an optically pumped semiconductor OPS gain-structure. The apparatus has a laser-resonator which includes a mode-locking device for causing the laser to deliver mode-locked pulses. The resonator has a total length selected such that the mode-locked pulses are delivered at a pulse repetition frequency of about 100 MHz. An optical arrangement within the resonator provides that radiation circulating in the resonator makes a plurality of incidences on the OPS gain-structure…
FIBER-MOPA APPARATUS FOR DELIVERING PULSES ON DEMAND
Granted: December 20, 2012
Application Number:
20120320450
A fiber-MOPA includes a seed-pulse source followed by fiber amplifier stages. The seed pulse source delivers signal pulses for performing a laser operation and delivers radiation between the seed pulses to maintain the collective average of the seed pulse power and intermediate radiation power constant. Keeping this average power constant keeps the instantaneous available gain of the fiber amplifier stages constant. This provides that the seed pulse delivery can be changed from one…
IMPEDANCE-MATCHING TRANSFORMERS FOR RF DRIVEN CO2 GAS DISCHARGE LASERS
Granted: December 6, 2012
Application Number:
20120307852
In a CO2 gas discharge laser energized by a radio frequency (RF) power source a transformer having selectively variable output impedance is used to match output impedance of the power source to the impedance of discharge electrodes of the laser. A similar transformer can be used to impose a selective variable phase-shift on the RF power from the source. The variable impedance transformer can also be used for impedance matching between amplifier stages in the power source.
FREQUENCY-TRIPLED FIBER MOPA
Granted: November 29, 2012
Application Number:
20120300287
Fundamental-wavelength pulses from a fiber a laser are divided into three or more pulse portions and the three or more portions are separately amplified. Two or more of the amplified fundamental-wavelength pulse-portions are combined and frequency-doubled. The frequency doubled portion is sum-frequency mixed with one or more of the other amplified fundamental wavelength pulse-portions to provide third-harmonic radiation pulses.
WAVEGUIDE CO2 LASER WITH MUTIPLY FOLDED RESONATOR
Granted: November 8, 2012
Application Number:
20120281728
A gas-discharge waveguide CO2 laser has a Z-shaped folded waveguide formed by three ceramic tubes. Ends of the adjacent tubes are shaped and fitted together to form a common aperture. The tubes are held fitted together by spaced-apart parallel discharge electrodes. Four mirrors are arranged to form a laser-resonator having a longitudinal axis extending through the tubes.
OPTICALLY-PUMPED SURFACE-EMITTING SEMICONDUCTOR LASER WITH HEAT-SPREADING COMPOUND MIRROR-STRUCTURE
Granted: October 25, 2012
Application Number:
20120269216
A gain-module for use in an OPS-laser includes a multilayer semiconductor gain-structure surmounting a multilayer compound mirror-structure. Within the multilayer compound mirror-structure is a relatively thick layer of diamond which serves as a heat-spreader.
UNIT-MAGNIFICATION CATADIOPTRIC AND CATOPTRIC PROJECTION OPTICAL SYSTEMS
Granted: October 25, 2012
Application Number:
20120268836
Ring-field, catoptric and catadioptric, unit-magnification, projection optical systems having non-concentric optical surfaces are disclosed. Each system has a system axis with object and image planes on opposite sides of the system axis. The non-concentric surfaces allow for working distances of the object and image planes in excess of 100 millimeters to be achieved, with a ring-field width sufficient to allow a rectangular object-field having a long dimension in excess of 100 mm to be…
LASER PRINTER WITH MULTIPLE LASER-BEAM SOURCES
Granted: October 25, 2012
Application Number:
20120268548
A laser printer arranged to print a pixellated image on laser sensitive tape includes a carriage on which are arranged two laser-beam sources delivering separately modulated laser-beams and optics for focusing the beams on the tape. The tape is mounted on a tape drive which drives the tape incrementally in one direction. The carriage is translated over the tape in a direction perpendicular to the tape-drive direction, while the modulated beams are focused. Two rows of the pixellated…
